SW8030112_HISTORICAL FILE_20080508

STORMWATER DIVISION CODING SHEET
POST-CONSTRUCTION PERMITS
PERMIT NO. SW8
DOC TYPE ❑ CURRENT PERMIT
❑ APPROVED PLANS
© HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE Zoo g oSO2s
YYYYMMDD

F WATF
'�Q 115Q Michael F. Easley,Governor
QWilliam G.Ross Jr.,Secretary
r North Carolina Department of Environment and Natural Resources
J �
'C Coleen 11.Sullins Director
Division of Water Quality
May.8, 2008
Dean McFarland, Chairman, Board of Trustees
Wrightsboro United Methodist Church
3300 North Kerr Ave.
Wilmington, NC 28405
Subject: NPDES Phase II Stormwater Permit No. SW8 030112 MOD
Wrightsboro United Methodist Church Expansion
High Density Commercial Wet Pond Project
New Hanover County
Dear Mr. McFarland:
The Wilmington Regional Office received a complete NPDES Phase II Stormwater
Management Permit Application for Wrightsboro United Methodist Church Expansion on May
5, 2008. Staff review of the plans and specifications has determined that the project, as
proposed, will comply with the Stormwater Regulations set forth in Session Law 2006-246 and
Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 030112 MOD dated May 9,
2008, for the construction of the subject project.
This permit shall be effective from the date of issuance until May 9, 2018, and shall be subject
to the conditions and limitations as specified therein. Please pay special attention to the
Operation and Maintenance requirements in this permit. Failure to establish an adequate
system for operation and maintenance of the stormwater management system will result in
future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have
the right to request an adjudicatory hearing upon written request within sixty (60) days
following receipt of this permit. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands
are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please
contact Steve Pusey, or me at [phone].
Sine ely,
E and ec
Regional Supervisor
Surface Water Protection Section
ENB/ sgp: S:\WQS\STORMWATER\PERMIT\030112mod.may08
cc: Phillip Tripp, PE - Tripp Engineering, PC
New Hanover County Building Inspections
City of Wilmington Development Services
Beth E. Wetherill, New Hanover County Engineering
Steve Pusey
C-Wilmington-Regional-Office-7 o e
Central Files NorthCarolina
;Nrrtrrrally
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone[phone] Customm Service
Wilmington Regional Office Internet: www.newateraual'ty ore Fax [phone]
An Equal OpporlunitylAffirmative Action Employer—50%Recycled110%Post Consumer Paper

State Stormwater Management Systems
Permit No. SW8 030112 MOD
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
NPDES PHASE II STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Dean McFarland and Wrightsboro United Methodist Church, Board of Trustees
Wrightsboro United Methodist Church
3300 North Kerr Avenue, New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of Session Law 2006-246 and 15A NCAC 2H .1000 (hereafter referred to
as the "stormwater rules') and the approved stormwater management plans and
specifications and other supporting data as attached and on file with and approved by
the Division of Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until May 9, 2018, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.7 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 68,832 square feet of
impervious area.
3. The tract will be limited to the amount of built-upon area indicated in Section 1.7
on page 3 of this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built-upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
6. The built-upon areas associated with this project shall be located at least 30 feet
landward of all perennial and intermittent surface waters.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 030112 MOD
7. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a. Drainage Area, acres: 2.58
Onsite, ft : 112,385
Offsite, ftz: 0
b. Total Impervious Surfaces, acres: 1 .58
Onsite, ft : 68,832
Offsite, ftz: 0
C. Design Storm, inches: 1 .5
d. Pond Depth, feet: 4.5
e. TSS removal efficiency: 90%
f. Permanent Pool Elevation, FMStz: 28.5
g. Permanent Pool Surface Areq, ft : 5,588
h. Permitted Storage Volume, ft : 8,908 at temporary pool elev.
i. Temporary Storage Elevation, FM§L: 29.8
j. Predevelopment 1 year 24 hour, ft /s: 1 .63
k. Post development 1 year 24 hour, ft /s: 0.49
I. Controlling Orifice: 1.5"0 pipe
M. Permitted Forebay Volume, ft3: 4,150
n. Fountain Horsepower, HP NA
o. Receiving Stream/River Basin: U.T. Smith Creek / Cape Fear
P. Stream Index Number: 18-74-63
q. Classification of Water Body: "C; Sw"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built-upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all time provide the operation and maintenance necessary
to assure the permitted stormwater system functions at optimum efficiency. The
approved Operation and Maintenance Plan must be followed in its entirety and
maintenance must occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and re-vegetation of slopes and the vegetated filter strip.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, level
spreader, filter strip, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept for each permitted BMP. The
records will indicate the date, activity, name of person performing the work and
what actions were taken.
5. The permittee shall submit to the Division of Water Quality an annual summary
report of the maintenance inspection records for each BMP. The report shall
summarize the inspection dates, results of the inspections, and the maintenance
work performed at each inspection.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 030112 MOD
6. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
7. Decorative spray fountains will not be allowed in the stormwater treatment
system.
8. The facilities shall be constructed as shown on the approved plans. This permit
shall become void unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
9. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
10. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
11. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built-upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built-upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
12. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
13. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
14. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 030112 MOD
III. GENERAL CONDITIONS
1 . This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a completed Name/Ownership Change form, to the Division of Water
Quality, signed by both parties, and accompanied by supporting documentation
as listed on page 2 of the form. The project must be in good standing with the
Division. The approval of this request will be considered on its merits and may or
may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
6. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
7. The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re-issuance or
termination does not stay any permit condition.
8. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10. The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules and regulations contained in Session Law 2006-
246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
11. The permittee shall notify the Division of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
Permit issued this the 9th day of May, 2008.
NORTH ROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
01
for Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
Permit No. SW8 030112 MOD
Wrightsboro United Methodist Church Expansion
Stormwater Permit No. SW8 030112 MOD
New Hanover County
Designer's Certification
1, , as a duly registered in the
State of North Carolina, having been authorized to observe (periodically/ weekly/ full
time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
SEAL
Signature
Registration Number
Date
Page 6 of 7

State Stormwater Management Systems ,
Permit No. SW8 030112 MOD
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built-upon area.
3. All the built-upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11 . The permitted amounts of surface area and/or volume have been
provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
15. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
New Hanover County Building Inspections
Page 7 of 7

DWQ USE ONLY
Date Recei ed Fee Paid Permit Number
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality RECEIVED
STORMWATER MANAGEMENT PERMIT APPLICATION.FORM
This fonn may be photocopied for use as an original V zoos
BY;
1. GENERAL INFORMATION
1. Applicants name(specify the name of the corporation, individual,etc. who owns the project):
Wrightsboro United Methodist Church
2. Print Owner/Signing Official's name and title(person legally responsible for facility and compliance):
Dean McFarland,Chairman,Board of Trustees
3. Mailing Address for person listed in item 2 above:
3300 North Kerr Ave.
City:Wilmington State:NC Zip:28405
Phone: (910 ) 762-2583 Fax: L )
Email:
4. Project Name(subdivision, facility,or establishment name-should be consistent with project name on plans,
specifications,letters,operation and maintenance agreements,etc.):
Wriehtsboro United Methodist Church Expansion
5. Location of Project(street address):
3300 North Kerr Ave
City:W ilmington County:NC
6. Directions to project(from nearest major intersection):
North side of SR 1322. 0.5 miles of intersection of NC 133-US 117 and SR 1322
7. Latitude:341722" Longitude:77 5452" of project
8. Contact person who can answer questions about the project:
Name:Phillip Tripp Telephone Number: (910 ) 763-5100
Email:ptri [e-mail].o m
II. PERMIT INFORMATION:
1. Specify whether project is (check one): ❑New ❑Renewal ®Modification
Form SWU-101 Version 8.07 Page I of

2. If this application is being submitted as the result of a renewal or modification to an existing permit,list the
existing permit numberSW8 030112 and its issue date(if known) 06/23/03
3. Specify the type of project(check one):
❑Low Density ®High Density ❑Redevelop ❑General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements(check applicable blanks):
❑CAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below,summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages)describing stormwater management for the project.
Existing wet detention pond with forebay and wood baffle dividing pond to increase length to width ratio above
3:1
2. Stormwater runoff from this project drains to the Cal2t Fear River basin.
3. Total Site Area:2.58 acres 4. Total Wetlands Area: 0.00 acres
5. 100'Wide Strip of Wetland Area: N/A acres (not applicable if no wetlands exist on site)
6. Total Project Area":2.58 acres 7. Project Built Upon Area: 61.25 %
8. How many drainage areas does the project have? 1
9. Complete the following information for each drainage area. If there are more than two drainage areas in the
project,attach an additional sheet with the information for each area provided in the same format as below.
Basin Information Drainage Area 1 Drainage Area 2
Receiving Stream Name U.T.Smith Creek
Stream Class&Index No. CSW
Drainage Area(sf) 112,385 sf
Existing Impervious'Area(sf) 43,777 sf
Proposed Impervious*Area(sf) 25,055 sf
% Impervious`Area(total) 68,832 sf/1.58 ac.
Impervious*Surface Area Drainage Area 1 Drainage Area 2
On-site Buildings(so 24,637 sf
On-site Streets (so 0 sf
On-site Parking (sf) 41,059 sf
On-site Sidewalks (so 3,136 sf
Other on-site (so 0 sf
Off-site (sf) 0 sf
Total (sf): 68,832 sf
Impervious area is defined as the built upon area including, but not limited to, buildings, roads,parking areas,
sidewalks,gravel areas,etc.
Form SWU-101 Version 8.07 Page 2 of

**Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area
percentage calculation.
10. How was the off-site impervious area listed above derived?
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following deed restrictions and protective covenants are required to be recorded for all subdivisions,
outparcels and future development prior to the sale of any lot. If lot sizes vary significantly,a table listing each lot
number,size and the allowable built-upon area for each lot must be provided as an attachment.
Form DRPC-1 High Density Commercial Subdivisions
Form DRPC-2 High Density Developments with Outparcels
Form DRPC-3 High Density Residential Subdivisions
Form DRPC-4 Low Density Commercial Subdivisions
Form DRPC-5 Low Density Residential Subdivisions
Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets
By your signature below,you certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding
on all parties and persons claiming under them,that they will run with the land,that the required covenants
cannot be changed or deleted without concurrence from the State,and that they will be recorded prior to the
sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at(919) 733-5083 for the status
and availability of these forms.
Form SW401-Low Density Low Density Supplement
Form SW401-Curb Outlet System Curb Outlet System Supplement
Form SW401-Off-Site System Off-Site System Supplement
Form SW401-Wet Detention Basin Wet Detention Basin Supplement
Form SW401-Infiltration Basin Infiltration Basin Supplement
Form SW401-Infiltration Trench Underground Infiltration Trench Supplement
Form SW401-Bioretention Cell Bioretention Cell Supplement
Form SW401-Level Spreader Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Form SW401-Wetland Constructed Wetland Supplement
Form SW401-Grassed Swale Grassed Swale Supplement
Form SW401-Sand Filter Sand Filter Supplement
Form SWU-101 Version 8.07 Page 3 of 4

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the
interactive online map at http://h-o.enr.state.nc.us/su/msi maps.htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions&Protective Covenants Form C L C
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP C' Wit_
• Permit application processing fee of$505($4,000 for Express)payable to NCDENR C I—C
• Calculations&detailed narrative description of stormwater treatment/management c LC-
• Copy of any applicable soil report r LC
• Three copies of plans and specifications (sealed,signed &dated), including: G(_L
-Development/Project name
-Engineer and firm
-Legend
-North arrow
-Scale
-Revision number&date
-Mean high water line
-Dimensioned property/project boundary
-Location map with named streets or NCSR numbers
-Original contours,proposed contours,spot elevations, finished floor elevations
-Details of roads,drainage features,collection systems, and stormwater control measures
-Wetlands delineated,or a note on plans that none exist
-Existing drainage(including off-site),drainage easements, pipe sizes, runoff calculations
-Drainage areas delineated
-Vegetated buffers(where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent(individual or firm):Tripp Engineering, P.C.
Mailing Address:419 Chestnut St
City:Wilmington State:NC Zip:28401
Phone: (910 ) 763-5100 Fax: (910 ) 763-5631
Email:[e-mail]
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Dean McFarland
certify that the information included on this permit application form is, to the best of my knowledge,correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000.
Signature: e£—. /!�` � Dater
i
FormSWU-101 Version8.07 Page 4of4

TRwp ENGINEERING, P.C.
419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] FAX: [phone]
G
�P
May 7, 2008
NCDENR
Division of Water Quality
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Mr. Steve Posey
Re: Wrightsboro Methodist Church
New Hanover County, NC
TE 07102
Dear Steve:
Enclosed please find two (2) sets of plans, one (1) revised stormwater permit
application page 2 form, one (1) revised stormwater narrative, and two (2) sets of
revised calculations. Per your comment letter dated April 10, 2008, we offer the
following:
1. Pond easement is labeled on the plan.
2. Wetland species to be used for the pond vegetation are listed in the 2nd note
on the pond detail.
3. The average width of the pond is 55' and the average length is 100', which
in the 1.5:1 ratio. Additionally, we have added to baffle walls to meet the
3:1 ratio for the flow path.
4. Areas are listed in square feet on the application.
5. The calculations have been corrected to 4.94% and revised calculations are
enclosed.
6. 0.25 x [1+ 4002 ] + [[4002+1284 x 6 ] =4.39, Round up to 4.5'.
4002-
7. Graphic scale is on the site plan.
8. Original contours from existing survey, proposed spot elevations , existing
and proposed finished floor elevations, existing pipe inverts are on the site
plan.

9. All existing drainage is shown on the plan. There is no off-site drainage.
10. As far as we can tell,there are no existing easements.
11. Highlighted plan is enclosed.
12. The pond is existing and the existing normal pool is below the proposed
normal pool so the HWT shouldn't be affected and a soils test shouldn't be
needed.
13. We have revised the application, narrative, and calculations should all match
the new impervious numbers on site plan.
Please review for approval and contact us with any questions, comments or if
you need additional information. Thank you.
Sincerely,
Tripp En�gipn-e�ering, P.C.
�J��"j "
Jennifer Rohde
Enc.

J 5/72008 WRIGHTSBORO METHODIST CHURCH 07102
CLC Pond No 1
Stormwarter Cakzdations
Total Drainage Area
s .ft, acres Receiving Stream: U.T.Smith Creek Class: C SW
112,385 2.58 Drainage Basin: Cape Fear Index No.
Impervious Area
Land Use sq.ft. acres
Building 24,637 0.57 %impervious= 0.612
Parkinglasphalt 41,059 0.94 = 61.2%
Concrete 3,136 0.07 say 62.0%
Gravel 0 0.00
Future 0 0.00
Total 68,832 1.58
Stormwater Calculations
Time of Concentration:
Hydraulic Length(L)= 800 ft. CPRE= 0.25
change in Height(H)= 5 ft. CPT= (%imp.)(.95)+(1-%imp.)(.25)
TO = (L3/H).�/128 = 0.68
9.48 min. Iro= 6.30 in/hr
I.= 7.79 in/hr
Flow for 10 year,6 hour Storm(010):
EQ'-
- (CPRE)X(Irp)X(Area) Flow for 50 year,6 hour Storm(Qm):
4.06 cfs EQ
(CPRE)X(hp)x(Area)
= (CPOST)x(ho)x(Area) 5.02 cfs
11.05 cfs (CP T)x(Iro)x(Area)
13.67 cfs
Detention Pond Design
Pond Size: State Surface Area Requirement at nomalpool:
Elevation Surface Area Pond side slopes= 3 :1
ft. .ft. Depth below N.P.= 4.5 ft.
Normal Pool 28.50 5.588 SA/DA- 0.0494
Flood Pool 29.80 8,117 (Chart for 90%TSS Removal for Wet Detention
Top of Bank 33.40 12.281 Pond without Vegetative Filter
Clean Out 22.00 1,435 Required SA= (SA/DA)x(Total Drainage Area)
5,552 s .ft.
Total Provided Storage Volume: State Volume Reg.for Storage of first 1.5"runoff:
Vol. _ [(Normal pool SA+Flood Pool SA)/2] Rv= .05+.009(%imp)
x(F.P.elev.-N.P.elev.) = 0.6012195
= 8.908 cu.ft. V= (Design minfall)(Rv)(Drainage Area)
8,446 cu.ft.
0
OFESS%%Q�l%
SEAL
-0 17374
ORE
"min
07102 Pond NHC 1of2

5772008 WRIGHTSBORO METHODIST CHURCH 07102
• CLC Pond No 1
Stormwater Calculations
Pond Volume
I
C/O SA= 1,435 sq.ft.
Normal Pool SA= 5,588 sq.ft. _
VoL= ((MP.SA.C/O SA)/21 x(N.P.el.-C/O el.)
22,825 cu.ft.
Forebav:
Required Volurne
Vol.= 20%of storage volume
4,565 cu.ft.
Provided Volume
C/O SA= 640 sq.ft.
Normal Pool SA= 1.435 sq.ft.
Vol.= [(N.P.SA+C/O SA)121 x(N.P.el.-C/O el.)
4,150 cu.ft. jPercent of total= 18.2%
depth= 4 ft.
Outlet Structure Design
Flow for 2-day drawdown: Flow for 5-day drawdown:
for 1s11.5 of stormwater, for 1st 1_5"of stonnywater,
Q= Required Vol.1172,800 sec.(2days) Q= Required Vol./432,000 sec.(5-days)
= 0.049 cfs = 0.020 cfs
Required Area of Pipe for 2-day drawdown: Required Area of Pipe for 6-day drawdown:
A= Q/ICdxSQRT(2xgxh)] A= 0/[CdxSQRT(2xgxh)]
Cd= 0.6 Cd= 0.6
g= 32.2 ft./s2 g= 32.2 ft./s2
h= (F.P.elev.-N.P.elev.)2 It= (F.P.elev.-N.P.elev.)12
= 0.65 ft. = 0.65 ft.
A= 0.0126 sq,ft. A= 0.0050 sq.ft.
Diameter of Pipe for 2-day drawdown: Diameter of Pipe for 5-day drawdown:
DIA. = SQRT[(A x 4)/pi] DIA.= SQRTI(A x 4)/pi]
0.1266 ft. = 0.0801 ft.
1.52 in. = 0.96 in.
Drawdown Calculation
Orifice Used- 1.5 in.
Drawdown rate= 0.047639 cfs
Drawdown time= 2.051998 days
Outlet Structure Check:
Using a 4'x 4'Basin, Q= Cw x L x H'�
Perimeter L = 16 ft. H= [Q/(Cw x L)]'
Cw= 3
Q= CIA - 0.38 ft.
C= (%imp.)(.95)+(1-%imp.)(.25)
0.68 Peak elevation= flood pool elevation+H
I= 6.30 in.for a 10 yr.Storm - 30.18 ft.
A= 2.58 Acres
11.05 cfs
07102-Pond-NHC 2 of 2

5n12008 WRIGHTSBORO METHODIST CHURCH 07102
CLC Pond No 1
1-yr 24-hr Stormwater Routing
WATERSHED DATA 1-YR 24-HR STORM
BEFORE DEVELOPMENT AFTER DEVELOPMENT
WATERSHED AREA 2.58 ACRES WATERSHED AREA 2.58 ACRES
HYDRAULIC LENGTH 800 FT HYDRAULIC LENGTH 800 FT
CHANGE IN HEIGHT 5 FT CHANGE IN HEIGHT 5 FT
RUNOFF COEF.'C' 0.25 RUNOFF COEF.'C' 0.68
TIME OF CONCENTR 9.48 MIN TIME OF CONCENTR 9.48 MIN
INTENSITY 1 YR 2.52959 IN/HR INTENSITY 1 YR 2.52959 IN/HR
Qa= 1.63 CFS Qp= 4.44 CFS
Oa=PRE-DEVELOPED PEAK DISCHARGE Op=POST-DEVELOPED PEAK DISCHARGE
Total Discharge= 8,663 CIF Total Discharge= 23,563 CF
COMPUTE DEPTH OF RUNOFF
P= 3.7 INCHES 1yr,24hr PRECIPITATION
CN= 80
S=(1000/CN)-10
S= 2.50
Depth(D)=(P-0.2S)"2/(P+0.8S)
D= 1.80 IN-1 yr,24hr RUNOFF DEPTH
SET VOLUME AND COMPUTE TIME TO PEAK
Tp=((43.5)(D)(Area)]/Qp
Tp= 45.43 MINUTES
Storage Volume Req'd= (Op-Qa)'Tp'1.39'60
10,633 cu.ft.
CALCULATE Ks AND b
SET NORMAL ELEVATION AT= 28.50 feet
S Z
CONTOUR INCR ACCUM
CONTOUR AREA VOL VOL STAGE In S In Z Z est
(so ft) (cu ft) (cu ft) (ft) (ft)
28.50 5,588 0 0 0 0 0 0
29.00 7,250 3,210 3,210 0.5 8.0739 -0.6931472 0.51
30.00 8,340 7,795 11,005 1.5 9.3061 0.4055 1.46
31.00 9,500 8,920 19,925 2.5 9,8997 0.9163 2.43
32.00 10,728 10,114 30,039 3.5 10.3102 1.2528 3.45
33.00 12,013 11,371 41,409 4.5 10.6313 1.5041 4.53
Regression Output:
Ks= 7041
b= 1.16
Constant 8.86
07102_Pond_NEC 1 o(4

5n12008 WRIGHTSBORO METHODIST CHURCH 07102
CLC Pond No 1
1-yr 24-hr Storrmrater Routing
CHAINSAW METHOD FOR
RISER BARREL ROUTING
STORM DATA
Oa= 1.63 cfs
OP= 4.44 cfs
Tp= 45.4 min
dT= 4 min
BASIN DATA
Ks= 7041
b= 1.16
Zo= 28.50 ft
Normal water elev= 28.50 ft
Peak Outflow= 0.49 cfs
Box Weir Length= 16 It Peak Stage= 30.35 ft
Cw= 3.0 Maximum Storage= 14,375 cu it
Zcr= 32.30 it Control Holes:
State Orifice: Dia= 1.50 in
Dd= 24 in Inv= 28.50 it
Cd= 0.59 Weir L= 4in
Zi= 28.5 it Inv= 29.80 it
Time Inflow Storage Stage Outflow W Riser Barrel Orifice City Weir
(min) (cfs) (cu ft) (if) (cfs) (cfs) (cfs) (cfs) (cfs)
0 0.0 0 28.50 0 0 0 0 0.00
4 0.1 0 28.50 0 0.00 0 0 0.00
8 0.3 20 28.51 0.00 0.00 0.0 0.00 0.00
12 0.7 100 28.53 0.00 0.00 0.0 0.00 0.00
16 1.2 272 28.56 0.00 0.00 0.1 0.00 0.00
20 1.8 565 28.61 0.01 0.00 0.2 0.01 0.00
24 2A 995 28.68 0.02 0.00 0.4 0.02 0.00
28 3.0 1570 28.77 0.03 0.00 0.8 0.03 0.00
32 3.5 2287 28.88 0.03 0.00 1.2 0.03 0.00
36 4.0 3130 29.00 0.04 0.00 1.8 0.04 0.00
40 4.3 4077 29.12 0.04 0.00 2.6 0.04 0.00
44 4.4 5095 29,26 ,. 0.05 0.00 3.5 0.05 0.00
48 4.4 6145 29.39 0.05 0.00 4.4 0.05 0.00
52 4.2 7189 29.52 0.06 0.00 5.4 0.06 0.00
56 3.9 8187 29.64 0.06 0.00 6.4 0.06 0.00
60 3.5 9102 29.75 0.06 0.00 7.3 0.06 0.00
64 3.1 9917 29.84 0.07 0.00 8.2 0.07 0.01
68 2.8 10639 29.93 0.11 0.00 9.0 0.07 0.05
72 2.5 11273 30.00 0.16 0.00 9.7 0.07 0.09
76 2.2 11823 30.06 0.21 0.00 10.3 0.07 0.14
80 2.0 12299 30.12 0.25 0.00 10.8 0.07 0.18
84 1.7 12707 30.16 0.29 0.00 11.3 0.07 0.22
88 1.6 13054 30.20 0.33 0.00 11.7 0.07 0.26
92 1.4 13348 30.24 0.36 0.00 12.1 0.08 0,29
96 1.2 13593 30.26 0.39 0.00 12.3 0.08 0.32
100 1.1 13795 30.29 0.42 0.00 12.6 0.08 0.34
104 1.0 13960 30.30 0.44 0.00 12.8 0.08 0.36
108 0.9 14091 30.32 0.45 0.00 12.9 0.08 0.37
112 0.8 14193 30.33 0.46 0.00 13.1 0.08 0.39
116 0.7 14269 30.34 0.47 0.00 13.1 0.08 0.40
120 0.6 14323 30.35 0.48 0.00 13.2 0.08 0.40
124 0.6 14357 30.35 0.48 0.00 13.2 0.08 0.41
128 0.5 14373 30.35 0.49 0.00 13.3 0.08 0.41
132 0.4 14375 30.35 0.49 0.00 13.3 0.08 0.41
07102 Pond NHC 3 of 4

5n12008 WRIGHTSBORO METHODIST CHURCH 07102
CLC Pond No 1
1-yr 24-hr Stommatu Routing
136 0.4 14364 30.35 0.49 0.00 13.3 0.08 0.41
140 0.4 14342 30.35 0.48 0.00 13.2 0.08 0.41
144 0.3 14310 30.34 0.48 0.00 13.2 0.08 0.40
148 0.3 14270 30.34 0.47 0.00 13.1 0.08 0.40
152 0.2 14224 30.33 0.47 0.00 13.1 0.08 0.39
156 0.2 14171 30.33 0.46 0.00 13.0 0.08 0.38
160 0.2 14114 30.32 0.45 0.00 13.0 0.08 0.38
164 0.2 14052 30.32 0.45 0.00 12.9 0.08 0.37
168 a2 13987 30.31 0.44 0.00 12.8 0.08 0.36
172 0.1 13920 30.30 0.43 0.00 12.7 0.08 0.35
176 0.1 13&50 30.29 0.42 0.00 12.6 0.08 0.35
180 0.1 13779 30.28 0.41 0.00 12.6 0.08 0.34
184 0.1 13706 30.28 0.41 0.00 12.5 0.08 0.33
188 0.1 13633 3027 0.40 0.00 12.4 0.08 0.32
192 0.1 13559 3026 0.39 0.00 12.3 0.08 0,31
196 0.1 13485 30.25 0.38 0.00 12.2 0.08 0.30
200 0.1 13411 30.24 0.37 0.00 12.1 0.08 0.30
204 0.1 13337 30.24 0.36 0.00 12.0 0.08 0.29
208 0.1 13264 30.23 0.35 0.00 12.0 0.07 0.28
212 0.0 13191 30.22 0.35 0.00 11.9 0.07 0.27
216 0.0 13119 30.21 0.34 0.00 11.8 0.07 0.26
220 0.0 13047 30.20 0.33 0.00 I'll 0.07 0.26
224 0.0 12976 30.19 0.32 0.00 11.6 0.07 0.25
228 0.0 12907 30.19 0.31 0.00 11.5 0.07 0.24
232 0.0 12838 3018 0.31 0.00 11.5 0.07 0.23
236 0.0 12770 30.17 0.30 0.00 11.4 0.07 0.23
240 0.0 12704 30.16 0.29 0.00 11.3 0.07 0.22
244 0.0 12638 30.16 0.29 0.00 11.2 0.07 0.21
248 0.0 12574 30.15 0.26 0.00 11.2 0.07 0.21
252 0.0 12511 30.14 0.27 0.00 11.1 0.07 0.20
256 0.0 12448 30.14 0.27 0.00 11.0 0.07 0.19
260 0.0 12388 30.13 0.26 0.00 10.9 0.07 0.19
264 0.0 12328 30.12 0.25 0.00 10.9 0.07 0.18
268 0.0 12269 30.11 0.25 0.00 10.8 0.07 0.18
272 0.0 12211 30.11 0.24 0.00 10.7 0.07 0.17
276 0.0 12155 30.10 0.24 0.00 10.7 0.07 0.17
280 0.0 12100 30.10 0.23 0.00 10.6 0.07 0.16
284 0.0 12045 30.09 0.23 0.00 10.6 0.07 0.16
288 0.0 11992 30.08 022 0.00 10.5 0.07 0.15
292 0.0 11940 30.08 022 0.00 10.4 0.07 0.15
296 0.0 11889 30.07 0.21 0.00 10.4 0.07 0.14
300 0.0 11839 30.07 0.21 0.00 10.3 0.07 0.14
304 0.0 11790 30.06 0.20 0.00 10.3 0.07 0.13
308 0.0 11742 30.05 0.20 0.00 10.2 0.07 0.13
312 0.0 11695 30.05 0.20 0.00 10.2 0.07 0.12
316 0.0 11648 30.04 0.19 0.00 10.1 0.07 0.12
320 0.0 11603 30.04 0.19 0.00 10.1 0.07 0.12
324 0.0 11559 30.03 0.18 0.00 10.0 0.07 0.11
328 0.0 11515 30.03 0.18 0.00 10.0 0,07 0,11
332 0.0 11472 30.02 0.18 0.00 9.9 0.07 0.11
336 0.0 11430 30.02 0.17 0.00 9.9 0.07 0.10
340 0.0 11389 30.01 0.17 0.00 9.8 0.07 0.10
344 0.0 11349 30.01 0.17 0.00 9.8 0.07 0.10
348 0.0 11309 30.01 0.16 0.00 9.7 0.07 0.09
352 0.0 11271 30.00 0.16 0.00 9.7 0.07 0.09
356 0.0 11233 30.00 0.16 0.00 9.6 0.07 0.09
360 0.0 11195 29.99 0.15 0.00 9.6 0.07 0.08
364 0.0 11159 29.99 0.15 0.00 9.6 0.07 0.08
368 0.0 11123 29.98 0.15 0.00 9.5 0.07 0.08
372 0.0 11087 29.98 0.15 0.00 9.5 0.07 0.08
376 0.0 11052 29.98 0.14 0.00 9.4 0.07 0.07
380 0.0 11018 29.97 0.14 0.00 9.4 0.07 0.07
384 0.0 10985 29.97 0.14 0.00 9.4 0.07 0.07
388 0.0 10952 29.96 0.14 0.00 9.3 0.07 0.07
07102 Pond M-IC 4 of 4

05/05/08 TE07102
Stormwater Narrative
Wrightsboro Methodist Church
New Hanover, NC
Wrightsboro Methodist Church requests a modification to their existing stormwater
permit, # SW8 030112, for the redevelopment of their site located at 3300 N. Kerr Ave.,
Wilmington,NC 28405. The site area consists of four tracts of land (R03316-002-006-000,
R03316-002-005-000, R03316-002-004-OOO, R03316-002-003-000)totaling 2.58 acres and
is proposed for the expansion of one existing building, one new building and additional
parking to accommodate requirements. No wetlands or areas of environmental concern
exist on the property. 1.37 acres of land will be disturbed for construction.
The main existing building will be expanded from 5,988 sf to a total of 8,008 sf. A
new 14,000 sf building is proposed, and a 2,803 sf building will remain. Two existing
buildings, 477 sf and 1,794 sf, are proposed to be removed. Total existing impervious is
43,777 sf and total proposed impervious is 25,055 sf for a total combined impervious of
68,832 sf or a percentage of 61.25%. Stormwater will be treated by one existing on-site wet
detention facilities that will be improved. The pond is sized to treat the first 1.5" of runoff
and meet pre-post runoff for New Hanover County's 10-yr 24-hr storm and DWQ's I-yr
24-hr storm. Outflow from the pond drains to the Cape Fear River Basin, via UT to Smith
Creek, classification C-SW.

o�0F `NArFgoG Michael F.Easley,Governor
CO William G.Ross Jr.,Secretary
rNorth Carolina Department of Environment and Natural Resources
Q Coleen H.Sullins Director
Division of Water Quality
April 10, 2008
Dean McFarland, Chairman, Board of Trustees
Wrightsboro United Methodist Church
3300 North Kerr Ave.
Wilmington, NC 28405
Subject: Request for Additional Information
Stormwater Project No. SW8 030112 MOD
Wrightsboro UMC Expansion
New Hanover County
Dear Mr. McFarland::
The Wilmington Regional Office received a State Stormwater Management Permit Application
for the Wrightsboro UMC Expansion on February 29, 2008. A preliminary review of that
information has determined that the application is not complete. The following information is
needed to continue the stormwater review:
1. Please locate the pond / swales in a recorded access/drainage easement.
2. Please specify pond / side slope vegetation and the wetland species to be
planted on the vegetated shelf. Neither Weeping Love Grass nor Cattails are
suitable as permanent vegetated cover for pond slopes.
3. Please provide a minimum 1.5:1 length to width ratio and a minimum 3:1 flow
path ratio in the pond. Artificial baffles of timber, vinyl, or earth can be used to
create a longer flow path. The top elevation of the baffle should be set at the
temporary pool elevation or higher.
4. Please report all areas in square feet on the application in Section 111.9.
5. SA/DA ratio needs to be corrected on the Wet Pond Supplement.
6. Please calculate the average pond depth and enter the appropriate SA/DA table
with the average pond depth rounded to the nearest 0.5'. A larger surface area
is required at the normal pool elevation.
7. Please provide an engineering scale on the plans.
8. Please provide original contours, proposed contours, spot elevations, finished
floor elevations, pipe inverts, swale inverts, etc. on plans.
9. Please show all existing drainage (piping, swales, ditches, ponds, etc.), including
off-site. Include a map delineating offsite drainage areas if applicable.
10. Please show all drainage easement widths, pipe sizes, and swale inverts.
11. The drainage area for the wet pond needs to be clearly delineated and numbered
to match up to the calculations and supplement. Drainage area delineation is 0.,
best done as a separate plan sheet. No
dvawrally
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone[phone] Customer Service
Wilmington Regional Office Internet: wa .ncvvateraualiryore Fax [phone]
An Equal Opportunity/Affirmative Action Employer—50%Recyctedl10%a Post Consumer Paper

Wrightsboro United Methodist Church
April 10, 2008
Stormwater Application No. SW8 030112 MOD
12. A soils report for all engineered systems is required. The report should
contain the estimated Seasonal High Water Table elevation at each
proposed BMP location
13. Please note that a revision to one number may have a domino effect on
other numbers, which may require revision of the applications,
calculations, supplements, plans, details, and associated documentation.
Please verify all numbers are correct to ensure consistency in the
application documents.
Please note that this request for additional information is in response to a preliminary
review. The requested information should be received in this Office prior to May 8,
2008, or the application will be returned as incomplete. The return of a project will
necessitate resubmittal of all required items, including the application fee.
If you need additional time to submit the information, please mail, email or fax your
request for a time extension to the Division at the address and fax number at the bottom
of this letter. The request must indicate the date by which you expect to submit the
required information. The Division is allowed 90 days from the receipt of a completed
application to issue the permit.
The construction of any impervious surfaces, other than a construction entrance under
an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and
is subject to enforcement action pursuant to NCGS 143-215.6A.
Please reference the State assigned project number on all correspondence. Any
original documents that need to be revised have been sent to the engineer or agent. All
original documents must be returned or new originals must be provided. Copies are not
acceptable. If you have any questions concerning this matter please feel free to call me
at [phone] or email me at [e-mail].
Sincerely,
Steve G. Pusey /
Environmental Engineer
ENB/sgp: S:\WQS\STORMWATER\ADDINFO\2008\030112mod.apr08
CC: Charles Cazier, Tripp Engineering, Inc.
Steve Pusey
CEile�
Page 2 of 2

TRIPP ENGINEERING, P.C.
0 419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] FAX: [phone]
RE�EjV�,�
February 2y 29, 2008
BY;
NCDENR
Division of Water Quality
127 Cardinal Drive
Wilmington, NC 28405-3845 75
Attn: Ms. Linda Lewis
Re: Wrightsboro Methodist Church
New Hanover County, NC
TE 07102 dM�
Dear Linda:
Enclosed please find two (2) sets of plans, one (1) stormwater permit application
form with narrative, one (1) wet detention basin supplement, two (2) sets of calculations,
and one check for the application fee.
Please review for approval and contact us with any questions, comments or if
you need additional information. Thank you.
Sincerely,
Tripp Engineering, P.C.
Chris L. Canaday
CLC:dcb
Enc.

f.
JOSEPH S. HILL, JR. AND ASSOCIATES
CONSULTING ENGINEERS and PLANNERS ' , 1r
1602 HARBOUR DRIVE
WILMINGTON,NORTH CAROLINA 28401 i
TELEPHONE [phone] F O�C
"z0�3
FAX [phone]
December 3, 2003
Ms. Linda Lewis
N.C.D.E.M.
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
Subject: Stormwater Project No. SW8 030112
Wrightsboro United Methodist Church
New Hanover County
Dear Ms. Lewis:
Enclosed is the Engineer's Final Certification for the stormwater pond at
the above project.
Please contact me if you have any questions.
Sincerely,
JOSEPH S. HILL, JR. and ASSOCIATES
JSH/pat Joseph S. Hill, Jr., P.E.
Attachments
LEWIS.120303.doc